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Creating a mobile-friendly PDF is simple. Follow these tips to make your PDF easy to read, fill out, and share on any phone screen.

Edit PDFs with Google Drive easily by teaming it up with Smallpdf’s powerful online tools. Here’s the simplest way to get it done, no fuss.

Easily underline text in a PDF document online with Smallpdf. Highlight key points, add emphasis, or mark notes—no downloads needed.

Strikethrough helps with editing, proofreading, marking revisions, redacting sensitive info, and more. Learn how to do it easily on any device.

Use our online PDF Annotator to highlight text in a PDF and add annotations for free. Access and use the tool online, anytime—no registration needed.

Align text in a PDF quickly with Smallpdf’s easy online tool. No downloads needed—just upload, edit, and download your perfectly aligned PDF.

You can! It’s easy and totally intuitive. Whether you need to highlight key points, leave reminders, or make remarks, all it takes is a few clicks.

Can you add comments to a PDF? Yes! Learn how to add notes, annotations, and comment boxes with online and native tools.

Want to create bookmarks and navigation in your PDF documents? We show you how to do it for free, plus a little bit more.

Adding notes to a PDF doesn’t have to be a chore. With Smallpdf’s easy-to-use annotator, you can mark up documents in no time and stay organized.

Add a table of contents to PDFs to make navigation a breeze, plus learn how to create a glossary, index, and sections for a polished document.

Want to add input fields to PDFs? It’s quick and easy with tools like Smallpdf or Preview on Mac—no fancy software needed! Here’s how to do it.

Looking to add drop-downs to a PDF but don’t want to spend a fortune on fancy software? We'll show you how to do it without spending a cent.

Easily add checkboxes to PDFs for forms, surveys, or quick checklists for free with Smallpdf—on any device—or with Preview on macOS.

PDFs can be tricky to edit; here's how to fix the most common issues in a few easy steps—no tech degree needed.

Need to hide sensitive info in a PDF? Here’s why you shouldn’t just black out the text, and what you should do instead. Plus, a free PDF redactor.

With Smallpdf compression, you can reduce PNG file size while preserving image quality. In this article, you’ll learn how to use this feature.

Learn how to watermark PDFs using two free methods: Smallpdf’s online tool and Mac’s Preview tool. Brand and protect your docs with this quick guide.

Use Smallpdf to rearrange PDF pages so that your documents are better organized. Free to use; no registration or download needed.

Learn what PDF/A is and why it’s essential for long-term document archiving. Discover key features, versions, and differences between PDF and PDF/A.

Are you wondering how to insert PDF into Excel documents? In this article, you’ll get tips on accomplishing this task in Excel and Smallpdf.

Learn how to summarize, translate, and get insights from documents with PDF AI Readers. Plus, explore three free tools to chat with PDFs.

With our two weeks’ notice template, you can edit a resignation letter, sign it, and submit it to your current employer before starting your new job.

Do you want to look for a specific word or phrase in a PDF file? Here, you’ll find tips on searching PDFs with a PDF reader or web browser.